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Karo-lina-s [1.5K]
3 years ago
9

What cells have a nucleus?​

Biology
2 answers:
valkas [14]3 years ago
7 0

Answer:

eukaryotic cells

Explanation:

Eukaryotes are organisms whose cells have a nucleus enclosed within membranes. Prokaryotic cells do not have a nucleus

Viktor [21]3 years ago
6 0
Eukaryotic cells is the answer to your question
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they contain chlorophyll which makes leaves green and absorbs sunlight.

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3 years ago
NEED HELP QUICK PLEASE HELP
kozerog [31]

Answer:

Question 1

D

Question 2

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Question 3

D

Explanation:

1. An ecosystem is MOST likely to return to its original condition after Tall prairie grass burns after being struck by lightning.

Here is a research paper in which they explained how this happened. (Komarek, E. V. (1971). Lightning and fire ecology in Africa. In Tall Timbers Fire Ecology Conference (Vol. 11, pp. 473-509).)

2. In some national parks, controlled fires are maintained by firefighters. The major reasons for using controlled burns to maintain certain ecosystems is to give nonnative plants a chance to colonize the region.

A recent article provided the insight of this situation (Xanthopoulos, G., Delogu, G. M., Leone, V., Correia, F. J., & Magalhães, C. G. (2020). Firefighting approaches and extreme wildfires. In Extreme Wildfire Events and Disasters (pp. 117-132). Elsevier.)

3. One reason for the change in the Galápagos ecosystem has been the introduction of species that were not on the island before, such as donkeys, goats, cats, dogs, and insects. The introduction of nonnative species MOST likely disrupt the balance of life on the islands due to greater competition for limited food sources.

Scientist said that food competition is actually a struggle to survive in any ecosystem here is the reference paper (Eckhardt, R. C. (1972). Introduced plants and animals in the Galapagos Islands. Bioscience, 22(10), 585-590.)

5 0
3 years ago
How would seasons on Earth differ if Earth's axis was at a 90 degree angle relative to its orbit?
Triss [41]

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There would be no seasons anywhere on Earth

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If the Earth's axis was not tilting and it was at a 90 degrees angle relative to its orbit, then the seasons on Earth would disappear. The climate on the planet would be defined by the latitude. The equator and the areas close to it would always have summer, as they will receive direct sunlight throughout all of the year. The mid-latitudes will always have temperate climate, reminding of spring and autumn, as the sunlight will not be very direct, but it will also not be very dispersed, jut enough to create a constantly pleasant climate. The higher latitudes will always have winter, as the sunlight will come at a very low angle throughout all of the year, thus it will be very dispersed, not enough to ever warm this parts enough, so they will constantly be under ice.

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3 years ago
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What will you observe if the air temperature Is 53F and the dewpoint is 45F?
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You will some water vapour
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